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Heat pump for hot water supply apparatus, has controller that stops feed water pump and opens variable aperture to predetermined amount, in defrost driving mode for removing frost in outdoor heat exchanger
Heat pump for hot water supply apparatus, has controller that stops feed water pump and opens variable aperture to predetermined amount, in defrost driving mode for removing frost in outdoor heat exchanger
A controller (8) stops a feed water pump (6) and opens variable aperture (3e) to predetermined amount, in defrost driving mode for removing frost in an outdoor heat exchanger (5).
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